Looked at several sites with lyrics for NGDB lyrics, but no luck. Have found out that the author is Glocoat-Blues (Jimmie Fadden). For others interested in NGDB lyrics, here are three of the sites with their lyrics.

"Glocoat Blues" appears on The Nitty Gritty Dirt Band's album "Stars & Stripes Forever," originally issued as United Artists LP 184J2, 1974, but more recently reissued as Capitol CD 33828, 1995; or Alliance CD 33828, 1996. It is still available at CDNOW.